virginia congressman bobby scott said the guns should contain metal parts that cannot be detached. >> the law has a critical loophole which may encourage the production of firearms that may escape detuck shun. >> they may produce a firearm that is detectable only because it has a metal component, which is not essential to the operation of the firearm but is easily removable by the firearm user seeking to avoid detection. >> >> ifill: the senate could take up the bill on monday, when it returns from thanksgiving recess. the existing ban expires on tuesday. on another issue, the house decided to spend the money that air travelers accidentally leave at security checkpoints. all those coins added up to more than half a million dollars in 2012. under the "loose change act," it will go to non-profit groups that run airport lounges for military personnel and their families. the bill now heads to the senate. in japan, visiting vice president joe biden rebuked china for imposing an air defense zone over islands that tokyo also claims. he said the u.s. is "deeply concerned." the vice president